La moral es la espina dorsal de los imbéciles.
La vocación es la espina dorsal de la vida
Los caníbales prefieren a los que carecen de espina dorsal.
Owl explained about the Necessary Dorsal Muscles. He had explained this to Pooh and Christopher Robin once before and had been waiting for a chance to do it again, because it is a thing you can easily explain twice before anybody knows what you are talking about.